Disclosing $$D^*\bar{D}^*$$ D∗D¯∗ molecular states in the $$B_c^- \rightarrow \pi ^- J/\psi \omega $$ Bc-→π-J/ψω decay
Abstract We study the $$B_c^- \rightarrow \pi ^- J/\psi \omega $$ Bc-→π-J/ψω and $$B_c^- \rightarrow \pi ^- D^* \bar{D}^*$$ Bc-→π-D∗D¯∗ reactions and show that they are related by the presence of two resonances, the X(3940) and X(3930), that are of molecular nature and couple most strongly to $$D^*...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2018-03-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-018-5702-7 |
| Summary: | Abstract We study the $$B_c^- \rightarrow \pi ^- J/\psi \omega $$ Bc-→π-J/ψω and $$B_c^- \rightarrow \pi ^- D^* \bar{D}^*$$ Bc-→π-D∗D¯∗ reactions and show that they are related by the presence of two resonances, the X(3940) and X(3930), that are of molecular nature and couple most strongly to $$D^* \bar{D}^*$$ D∗D¯∗ , but also to $$J/\psi \omega $$ J/ψω . Because of that, in the $$J/\psi \omega $$ J/ψω mass distribution we find a cusp with large strength at the $$D^* \bar{D}^*$$ D∗D¯∗ threshold and predict the ratio of strengths between the peak of the cusp and the maximum of the $$D^* \bar{D}^*$$ D∗D¯∗ distribution close to $$D^* \bar{D}^*$$ D∗D¯∗ threshold, which are distinct features of the molecular nature of these two resonances. |
|---|---|
| ISSN: | 1434-6044 1434-6052 |